Hello children! Do you know Pythagoras? Pythagoras examined the sounds coming from glasses filled with different amounts of water. The simple proportions between the materials that make up the sounds made the sound pleasant to the ear. Thus, Pythagoras laid the foundations between music and mathematics.

Let's do Pythagoras' experiment!

Create the 7 colours of the rainbow

Read and/or watch videos on how to create different colours from primary colours.

For example:

• https://www.youtube.com/watch?v=yBuDbMWlbac

. https://youtu.be/HNxSX2IX4Dw?si=yYQK4sYl3kf26cf9

• https://trycolors.com/

• https://phet.colorado.edu/en/simulation/color-vision

Musical water glasses:

The teacher will ask the students to find out the proportion of water needed for each glass to produce a different sound. What you need: same-sized glasses, water, food colouring, and a wooden spoon.

• Fill the glasses with different levels of water, then add the food colouring to further differentiate them. You can create a rainbow, reviewing the colours learned before in art class. When it’s finished take a wooden spoon and tap the glasses.

• After that, the class can make their melodies to present to the school community.

• Students can also use commonly available materials to imitate the sound of water.

You can also make your own music and record it on video using glasses and bottles filled with different amounts of water. Upload it here.

Games and music with Mathigon